| 摘要 |
The present invention provides a battery heating circuit, comprising a switch unit (1), a switching control module (100), a damping element R1, an energy storage circuit, and an energy superposition unit, the energy storage circuit is designed to connect with the battery to form a loop, and comprises a current storage element L1 and a charge storage element C1; the damping element R1, the switch unit (1), the current storage element L1, and the charge storage element C1 are connected in series; the switching control module (100) is connected with the switch unit (1), and is designed to control ON/OFF of the switch unit (1), so as to control the energy flowing between the battery and the energy storage circuit; the energy superposition unit is connected with the energy storage circuit, and is designed to superpose the energy in the energy storage circuit with the energy in the battery when the switch unit (1) switches on and then switches off; the switching control module (100) is also designed to control the switch unit (1) to switch off after the first positive half cycle of current flow through the switch unit (1) after the switch unit (1) switches on, and the voltage applied to the switch unit (1) at the time the switch unit (1) switches off is lower than the voltage rating of the switch unit (1). |
